Brother FD3-B256 User manual
FD4−B256, B257 1/19
2000.7
FD3-B256
B257
Cylinder Bed Bottom Covering Stitcher
with Thread trimmer
Cylinder Bed Top and Bottom Covering
Stitcher with Thread Trimmer
Specifications
FD3 - B25 6 -033-3 / / /
A B C D
DDevice
Device No. Applicable
model Solenoidthread
trimmer Solenoid
wiper Solenoidtopcovering
threadtrimmer Solenoidpresser
footlifter Pneumatic
presserfootlifter Pneumatic
presserfootlifter
UT11 B256,B257 ¡− − − − −
UT12 B256 ¡ ¡ − − − −
UT13 B256,B257 ¡− − ¡− −
UT14 B256 ¡ ¡ −¡− −
UT32 B257 ¡−¡−−−
UT34 B257 ¡−¡ ¡ − −
UT21 B256,B257 − − − − ¡−
UT22 B256 −¡− − ¡−
UT23 B256,B257 − − − − ¡ ¡
UT24 B256 −¡− − ¡ ¡
UT42 B257 − − ¡−¡−
UT44 B257 − − ¡−¡ ¡
CS1
B256,B257
Condensestitchdevice
A
Model
6
Bottom coveringstitcher
7
Topandbottomcoveringstitcher
BSpecifications
011 Plainstitching
012*
Plainstitching(Highstroke)
033 Covering
051 Hemstitching(Theguideonthefrontcover)
053 Hemstitching(The guideonthe needleplate)
056 Circularhemming(With puller)/Binderopener, Tensionroller
061 Elastichemming(Withpuller)
0V1 Spunknitelasticloop attaching(Withpuller)/Binder opener,Tensionroller
0W1
Wideelastic loop attaching (With puller) / Tensionroller, Right knife
0X1 Hemstitching /With leftknife
0X3*
Hemstitching/Withbinderopenerandleftknife
0X6 Circularhemming(Withpuller) /Binderopener,Tension roller,Leftknife
*012 and 0X3 specifications are available in limited area only.
C
No.ofneedles/Needlegauge
1
2 needles 3.2 mm
2
2 needles 4.0 mm
3
2 needles 4.8 mm
4
2 needles 5.6 mm
5
2 needles 6.4 mm
6
3 needles 4.8 mm
7
3 needles 5.6 mm
8
3 needles 6.4 mm
FD4−B256, B257 2/19
2000.7
Specifications
2-Needle 3-Needle
Stitchpattern Stitchpattern
Sub-
class Application
Gauge No. B256 B257 Gauge No. B256 B257
-011 Plainstitching
-1
-2
-3
-4
-5
-6
-7
-8
-012*2 Plainstitching(Highstroke) − − − − −
-033 Covering -3
-4
-5
-6
-7
-8
-051
-053 Hem stitching
-051: Guide front cover attaching type
-053: Guide needle plate attaching type
-2
-3 -7
-8
-056 Circular hemming w/puller
Binder opener, Tension roller -2
-3 -7
-8
-061 Elastic hemming w/puller -1
-2
-3 − − −
-0V1*1 Spun knit elastic loop attaching w/puller
Binder opener, Tension roller − − − -7
-8 −
-0W1 Wide elastic loop attaching w/puller
Tension roller, Right knife − − − -7
-8
-0X1 Hem stitching w/left knife -2
-3 -7
-8
-0X3*2 Hem stitching w/left knife − − − -8 −
-0X6 Circular hemming w/puller
Binder opener, Tension roller
Left knife
-2
-3 -7
-8
*1 The sub-class –0V1 is only for B257.
*1–012and –0X3 specifications are available in limited area only.
FD4−B256, B257 3/19
2000.7
Heightof
presserfoot
(mm)
Needlesize Stitch length
(mm) Needle bar
stroke (mm) Differentialfeed
ratio(mm)
B256 B257
Max.speed
(rpm)
UYX128
#70
(#65-#90) 1.0-4.2 31.0 0.6-1.4 7.0 5.0 6,000
UYX128
#70
(#65-#90) 1.0-4.2 33.4 0.6-1.4 −6.0 5,000
UYX128
#70
(#65-#90) 1.0-4.2 31.0 0.6-1.4 7.0 5.0 6,000
UYX128
#70
(#65-#90) 1.0-4.2 31.0 0.6-1.4 7.0 5.0 6,000
UYX128
#70
(#65-#90) 1.0-4.2 33.4 0.6-1.4 7.0 6.0 4,500
UYX128
#70
(#65-#90) 1.0-4.2 33.4 0.6-1.4 7.0 6.0 4,500
UYX128
#70
(#65-#90) 1.0-4.2 33.4 0.6-1.4 −6.0 4,500
UYX128
#70
(#65-#90) 1.0-4.2 33.4 0.6-1.4 7.0 6.0 4,500
UYX128
#70
(#65-#90) 1.0-4.2 31.0 0.6-1.4 7.0 5.0 5,000
UYX128
#70
(#65-#90) 1.0-4.2 31.0 0.6-1.4 −5.0 5,000
UYX128
#70
(#65-#90) 1.0-4.2 33.4 0.6-1.4 7.0 6.0 4,500
Gauge No.
GaugeNo. No.ofneedles No.of threads Gauge(mm)
-1 23or4 3.2
-2 23or4 4.0
-3 23or4 4.8
-4 23or4 5.6
-5 23or4 6.4
-6 34or5 4.8
-7 34or5 5.6
-8 34or5 6.4
FD4−B256, B257 4/19
2000.7
Optional device
Thread wiper set
Solenoid type Partname Partcode Q’ty
Threadwiper set, A 183821-201 1
Air type Partname Partcode Q’ty
Threadwiperset S28896-001 1
Presser foot lifter set
Solenoid type Partname Partcode Q’ty
Solenoidpresserfootlifter set (A) 183795-401 1
* With the knee switch
Solenoid type Partname Partcode Q’ty
Solenoidpresserfootlifter set (B) 183796-401 1
* Without the knee switch
Air type Partname Partcode Q’ty
Pneumaticpresserfootlifterset S28904-001 1
* Without the knee switch
Solenoid upper thread trimmer set
Partname Partcode Q’ty
Upperthread trimmer set S28915-001 1
*With the face plate exclusively for this set.
FD4−B256, B257 5/19
2000.7
Thread trimmer set
Solenoid type
Partname Partcode Q’ty
Solenoidthreadtrimmerset S28906-001 1
Air type
Partname Partcode Q’ty
Pneumaticthread trimmer set S28908-001 1
FD4−B256, B257 6/19
2000.7
Air tube joint
Ref.No.
Partname Part code
Q’ty
2-1 Elbowunion S04896-000 1
2-2 T–union S28469-000 1
2-3 Triplejoint(3) S28470-000 1
2-4 Triplejoint(4) S28471-000 1
2-5 Triplejoint(5) S28472-000 1
* Use this when using more than one air-driven device together.
Knee lifter device
Ref.No. Partname Part code Q’ty
63 Kneelifter deviceassy 155196-409 1
64 Screw4.1 ×25 032422-505 4
65 Chainassy S28357-001 1
* When used on the machine with the right knife specification (-071, -075), this enables you to stop and restart the operation of
the cloth knife at any place during sewing.
FD4−B256, B257 7/19
2000.7
Special parts to use when using spun thread or cotton thread
Ref.No.
Partname Part code
Q’ty
1Guidebase S28941-001 1
2Washer 105161-004 1
3Screw,pan SM3.57-40 ×6 062670-612 1
4Threadguide(M)holder S28942-001 1
5Screw,pan SM3.18-40 ×5 062660-512 2
6Threadguide(M) S28943-001 3
7Setscrew,socket(CP)SM3.18
146427-001
3
8Needleguard,BH S28483-101 1
----- Instructionmanual
S91251-262
1
* If there is a big difference among right, center, and left needle thread loop size, this thread guide (separate type) is effective in
preventing stitch skipping.
* This needle guard, BH is effective in preventing stitch skipping caused by unwanted left needle backward movement.
* For attaching the parts listed above, refer to the instruction manual also listed above.
FD4−B256, B257 8/19
2000.7
Rubber binder assy (For –0V1)
* The 35-mm threehold rubber binder is provided as a standard.
Threehold seam
30mm 35mm
Standard 40mm
S28601-001 S28609-001 S28614-001
Fellting
30mm 35mm 40mm
S28619-001 S28622-001 S28625-001
FD4−B256, B257 9/19
2000.7
Conversion parts for installing the table
* For table dimensions and installation, refer to theinstruction manual supplied with the machine.
Raised type →Semi-submerged type
Ref.No.
Partname Part code
Q’ty
27 Headplateassy S28830-001 2
28 Bolt, M8×55
211964-001
4
29 Nut,1 M8 021080-106 4
30 Washer,spring2-8 028080-242 4
31 Washer,plain M8 025080-236 4
Semi-submerged type →Raised type
Ref.No. Partname Part code Q’ty
37 Rubbercushionpin S28441-001 4
38 Retainingring,U5 S28442-001 4
39 Washer,plain M6 025060-236 4
40 Washer,spring2-6 028060-242 4
41 Nut,1M6 021060-106 4
53 Subbeltcover S28444-001 1
54 Screw, oval M5.5 ×20 100666-002 3
55 Washer,plainS5.56 025750-132 3
FD4−B256, B257 10/19
2000.7
Gauge parts list
Model B256
B257 B256
B257 B256
B257 B256
B257 B256
B257 B256
B257
Specifications 011-1 011-2 011-3 011-4 011-5 011-6
Label S08678-001 S08678-002 S08678-003 S08678-004 S08678-005 S08678-006
B256 B257
Application
Plainstitching
No.ofneedles 222223
Needlegauge(mm)
3.2 4.0 4.8 5.6 6.4 4.8
S28770-001 S28772-001 S28774-001 S28776-001 S28778-001 S28780-001
Needleclampassy
S21832-001 S21834-001 S21836-001 S21838-001 S21840-001 S21842-001
Presserfootassy
(B256)
S08779-201 S08786-201 S08788-201 S08790-201 S08792-201 S08794-201
Presserfootassy
(B257)
S08717-001 S08718-001 S08719-001 S08720-001 S08721-001 S08722-001
Needleplate
S28237-001
Mainfeed dog
S28242-001
Differentialfeeddog
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